Pipe coupling



Dec. 7, 1937. R. S. M KEEVER 2,101,406

/ PIPE COUPLING Original Filed Jan. 12, 1937 2 Sheets-Sheet l Dec. 7, 1937.

R. S. M KEEVER PIPE COUPLING Original Filed Jan. 12, 1957 2 Sheets-Sheet 2 me ed Dec. 1, 1931 v U 2,101,406

7 PIPE COUPLING Roy S. McKeever, Tulsa, kla. ,assignor to Smith Separator Corporation, Tulsa, Okla., a corporation of Oklahoma Original application January 12, 1937, Serial No. 120,803. Divided and this application April 15, 1937, Serial No. 137,152

1 Claim. (Cl. 285-177) This invention relates to improvements in joints ception of a gasket ring 22. A nipple 23 has a or connections and more particularly to a special similar groove 24 to receive the gasket, and coupling to be used in place of the conventional means are provided for drawing the nipple toward flange connection on oil and gas separators or the the nozzleto effecta tight joint between these parts.

like. Such means includesa collar 25 having an internal 5 The present application is a division of my annular shoulder 26 which contacts with the exparent application, Serial No. 120,303, filed ternal shoulder 21 of the nipple. The collar has an January 12, 1937. internal cylindrical surface 28 near its outer end The improved coupling has been designed which slides on the external cylindrical surface 29 specifically for use in joining a pipe to a tank or of the nipple, and the latter has internal screw 10 similar vessel but it will bev apparent from the threads 30 for use in connecting a pipe or conduit present disclosure that it will be useful in other to the nipple. equipment. As best shown in Figs. 6 and 7, the collar is pro- Another object is to supply a joint or coupling vided at its inner end portion with a plurality of that is leak-proof and capable of withstanding equally spaced longitudinally extending grooves 15 high pressures. 3| to receive the lugs l3 of the nozzle in coupling A further object is to provide a novel coupling the parts.

of the cam type, co-acting parts of which have The bore of the collar also forms a plurality of overlapping apertured ears to permit the coupling inclined or cam surfaces 32 which cooperate with to be tightened by the use of a single bolt. the cam surfaces ll of the nozzle to form a tight 20 With the foregoing objects outlined and with joint when the collar is turned relative to the other objects in view which will appear as the nozzle. Such turning movement brings the indescription proceeds, the invention consists in the temal shoulder 33 of the collar into tight engagenovel features hereinafter described in detail, ilment with the external shoulders l5 of the nozzle.

lustrated in the accompanying drawings and more To assist in turning the collar relatively to the 5 particularly pointed out in the appended claim. nozzle, each of these parts has an apertured ex- In the drawings: ternal lug or ear 34 to receive a bolt 35, and it is Fig. l is an elevation partly in longitudinal secobvious that when the nut 36 is tightened on the tion of my improved coupling. bolt, the ear of the collar will be drawn toward Fig.2 is across-sectional view taken on line 22 the ear of the nozzle and this will result in the 30 of Fig. 1. cam surfaces 32 and I4 cooperating to effect a Fig. 3 is an elevation of the outer end of the tight joint. The mechanical advantage of this nozzle portion of the coupling. procedure is one to six, or in other words, one Fig. 4 is a side view of the outer end of the unit of pressure applied to the cam surfaces 32 5 nozzle. will exert six units of pressure on the gasket ring.

Fig. 5 is a view partly in section and partly i 22 or the inclined surfaces l4 of the ears of the elevation of a nipple forming part of the coupling. nozzle.

Fig. 6 is an end elevation of a cam ring or collar It has been found from actual practice that a forming part of the coupling. structure of the kind shown in the drawings will 40 Fig. '7 is a view of said collar partly in longitudiwithstand pressure up to 3,000 pounds per square 40 nal section and partly in elevation. inch.

Referring to the drawings, 8 designates the An ordinary flange of the type heretofore used nozzle, which is provided with a cylindrical bore 9 in order to withstand such a pressure would have and a flared external surface Ill that enlarges toto be made much thicker than the conventional ward the inner end ll of the nozzle. flanges and would involve the use of a great 45 The outer end, as best shown in Fig. 4, is pronumber of bolts as well as a loose gasket, which vided with an external cylindrical surface l2 and is a more diiiicult connection to take apart as a plurality of external lugs l3, each having an incompared to the coupling above described. ciined or cam surface l4 at one end and a plane The herein disclosed and illustrated embodishoulder l5 at its other end. merit of the invention has given satisfactory re- 50 For the purpose of connecting a pipe or conduit suits and it will be manifest to those skilled in the to such a nozzle by a leak-tight joint which will art, after an understanding of the invention, that withstand high pressures, the nozzle is not only other changes and modifications may be made provided with the lugs 13 but has an annular without departing from the spirit or scope of the recess or groove 2| in its outer end for the reinvention. It is intended that all matters con- 55 tained in the above description or shown in the drawings shall be interpreted as illustrative and not in a limiting sense.

What I claim and desire to secure by Letters Patent is:

Means for quick detachably connecting a pipe to a high pressure tank comprising a nozzle adapted to be secured to said tank and having an end groove and spaced peripheral lugs, the inner ends of the lugs being inclined andforming cam surfaces, a nipple adapted to be secured to said pipe and having an external annular shoulder and an end groove, an annular gasket seated in said grooves, a collar surrounding the nozzle and nipple and having an internal annular shoulder near one end thereof impinging against the shoulder oi the nipple, internal lugs at the opposite end portion of the collar provided with inclined inner ends forming cam surfaces engaging the cam surfaces of the lugs of the nozzle for moving the nipple toward the nozzle and tizhtening the gasket when the collar is turned in one direction relatively to'the nozzle, overlapping apertured ears pro jecting respectively from the collar and nozzle, and a bolt extending through said apertures for use in drawing the ears toward one another.

ROY S. MCKEEVER. 

